BATTERY COOLING STRUCTURE

To preferentially fill a heat conductor in a recess of a concave-convex surface of a cooler, and extrude an excess heat conductor out of the recess after filling the recess to push the heat conductor out of the recess to fill the heat conductor both inside and outside the recess and prevent uneven cooling performance from occurring in each part of the battery cell in a battery cooling structure in which the heat conductor is sandwiched between a cooler and the battery cell to cool the battery cell.SOLUTION: A heat conductor 2 is configured to be elastically deformable by being sandwiched between a cooler 1 and a battery cell 4 and being pressed so as to adapt to the shape of the pressing surface. The heat conductor 2 includes a flat plate portion 21 sandwiched between the uneven surface of the cooler 1 and the surface facing the uneven surface of the battery cell 4, and a protrusion 22 formed integrally with the flat plate portion 21 and corresponding to a recess 11a on the uneven surface of the cooler 1 and having a volume that fills a space inside the recess 11a.SELECTED DRAWING: Figure 3 【課題】冷却器と電池セルとの間に熱伝導体を挟んで電池セルを冷却する電池冷却構造において、冷却器の凹凸面の凹部内に熱伝導体を優先的に充填し、凹部内の充填後に余る熱伝導体を凹部外に押し出すことにある。それにより、凹部内外両方に熱伝導体を充填させて電池セルの部位毎に冷却性能のムラが生じないようにする。【解決手段】熱伝導体２は、冷却器１と電池セル４とに挟まれて押圧されることにより押圧面の形状に馴染んで弾性変形可能に構成されている。熱伝導体２は、冷却器１の凹凸面及び電池セル４の凹凸面に対する対向面に挟まれる平板状の平板部２１と、平板部２１と一体に形成され、且つ冷却器１の凹凸面における凹部１１ａに対応させて形成され、凹部１１ａ内空間を満たす体積を有する突起部２２とを備える。【選択図】図３